JP2003209274A - Solar battery power generator for installation on water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery power generator for installation on water which is gentle to environment and has a simple structure. <P>SOLUTION: The solar battery power generator is provided with a bottom plate, a frame which can be attached to the bottom plate and in which a ceiling plate can be attached to an upper part, a solar battery module in which solar battery cells are integrated in a planar type, and a module pressing member for pressing the solar battery module. A box member having a space constituted of the bottom plate, the frame attached to the bottom plate and the solar battery module which is pressed against the upper part of the frame by using the module pressing member forms a float for floating the solar battery module on the surface of water. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell power generator for installation on water which is laid on the surface of a water such as a lake, dam lake, river or ocean to generate solar power and generate electric power.

[0002]

2. Description of the Related Art As clean energy, photovoltaic power generation is drawing attention. Since solar power generation generally uses a solar cell module in which solar cells are connected in series or in parallel on a plane, it is possible to meet local power demand, but a large amount of power is required. To obtain it, a large area is required due to the property that the output is proportional to the surface area of the solar cell. Therefore, solar power generation is generally performed by installing a solar cell power generation device having a solar cell module laid on an unused land, for example, a desert area, a hillside area, an idle land, or the like.

In recent years, to meet the power demand in urban areas,
Solar power generators have been installed on the roofs of houses and rooftops or side walls of buildings that have been used for solar power generation. It is not enough to meet the electricity demand in the area, and when a solar cell power generator is installed on the premises, planting is restricted in the surrounding area to prevent the sunlight from being blocked. It was also a problem that the scenery around the site was worse. Above all, in urban areas, it is difficult to secure a wide area on the ground where solar cell power generators are installed.

In order to solve such a problem, attention is beginning to be placed on the water such as a lake, a dam lake, a river, and the sea adjacent to an urban area to install a solar cell power generator. As an example of installation on the water, there is already a single device such as a power source for a sea buoy. In addition, as an example of installation on a large-scale water system that can be connected to a commercial power source, for example, Japanese Patent Laid-Open No. 8-16
Japanese Patent No. 7729 (hereinafter referred to as Conventional Example 1), Japanese Patent Laid-Open No. 10-17321
Publication No. 2 (hereinafter referred to as Conventional Example 2) is known.

[0005]

In the conventional example 1, as shown in FIG. 6, the solar cell module 22 in which the solar cell group 22a is laid and connected is attached to the upper portion of the float material 23 made of foamed resin to be integrated. The solar cell power generation device 21 for water installation (hereinafter, also simply referred to as a power generation device) has a structure. A mooring member (hook) 25 for connection is provided at four corners of the power generation device 21, and the power generation devices 21 are connected to each other via a mooring string 26 locked to the mooring member 25, or not shown. It is supposed to be fixed to the mooring part.

Here, in the power generation device 21 of Conventional Example 1, the surface of the foamed resin is protected by a waterproof coating in order to maintain the role of the float. Further, in the conventional example 2, as shown in FIG. 7A, the frame 37 is fixed to the float material 33, and the semi-cylindrical top plate 34 is laid on the upper portion of the frame 37. This power generation device 31 is one in which a flexible sheet-shaped solar cell module 32 having a curvature is fixed to a top plate 34 by module fixing plates 36, and fixing hooks 35 are provided on four sides of a frame 37 to generate electricity. A terminal box 38 for extracting electric power is also provided.

However, in the power generator 21 of the conventional example 1, when the waterproof film used for maintaining the role of the float contains the "environmental hormone" that affects the living body even at a minute concentration, it is submerged in water. It will elute and cause environmental damage. In addition, in the power generation device 21 of Conventional Example 1, the foamed resin is deteriorated by the ultraviolet rays contained in the sun's rays and becomes a powdery appearance defect state (so-called choking phenomenon), which is peeled off in a relatively short period of time and floated. There was a problem that it could not fulfill the role of.

On the other hand, in the power generation device 31 of Conventional Example 2, a semicylindrical top plate 34 that supports the flexible solar cell module 32.
Since the structure is complicated, the weight becomes heavier by the amount of the kamaboko-shaped top plate 34, and the float material 33 is made large in order to secure the buoyancy to keep the solar cell module 32 above the water surface. However, there is a problem that the manufacturing cost is increased.

It is an object of the present invention to solve the above-mentioned problems and to provide a solar cell power generator for installation on water which is environmentally friendly and has a simple structure.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a solar cell module is floated on the water surface without using a float material by constructing a power generator with a box having a space and using the box as a float. It is possible to solve the above problems. The solar cell power generator for water installation of the present invention is a solar cell power generator for water installation that is laid on a water surface and generates electric power by sunlight, and the solar cell power generator is attached to a bottom plate and the bottom plate. Possible, and has a frame capable of mounting a top plate, a solar cell module in which solar cells are integrated in a flat plate shape, and a module pressing member for pressing the solar cell module, and the bottom plate. A box having a space formed by the frame attached to the bottom plate and the solar cell module held by the module holding member on the upper portion of the frame floats the solar cell module above the water surface. Is forming.

In this case, the bottom plate, the frame and the module pressing member other than the solar cell module forming the box body are made of a metal material having corrosion resistance to further extend the life. Therefore, it is preferable that the solar cell module is pressed to the upper portion of the frame via a sealing material arranged at the edge of the solar cell module. Further, the fact that the buoyancy material is stored in the box body is more effective.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a solar cell power generator for installation on water according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a solar cell power generation device 11 according to an embodiment of the present invention. 2 is an exploded view of the solar cell power generation device 11 shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 shows a solar cell power generator 11 shown in FIG.
Although the A-A cross section is shown, other side walls forming the thin box body have the same structure. The solar cell power generation device 11 according to the embodiment of the present invention (hereinafter, power generation device
11 is also a thin box shown in FIG. 1 and has connecting mooring members 11a attached to its four corners. The power generators 11 are configured to connect the power generators 11 to each other via a connecting tool (not shown) locked to the connecting mooring member 11a, or to connect the generators 11 to a mooring portion (not shown).

The above box is composed of a bottom plate 1 shown in FIGS.
, A frame 2, a solar cell module 3, and a module pressing member 4, and are floated as described later. As shown in FIGS. 2 and 3, the bottom plate 1 is a rectangular flat plate, and a cable outlet 1a is provided near one side thereof. The cable outlet 1a is sealed by a seal member (not shown). Rubber or the like can be used as the seal member. Also, frame 2
Can be attached to the bottom plate 1 as shown in FIGS. 2 and 3,
Moreover, it is a frame body on which a rectangular flat plate can be attached as a top plate.

The frame 2 is attached to the bottom plate 1 and the solar cell module 3 is attached to the upper portion of the frame 2 to form a box body. The solar cell module 3 is a box-shaped top plate. The solar cell module 3
Is pressed against the mounting portion 2a of the frame 2 by the module pressing member 4 via the rubber packing 5. The rubber packing 5 is provided along the edge of the solar cell module 3,
The solar cell modules 3 are arranged in a C shape when viewed in the thickness direction cross section. Further, as shown in FIG. 3, the module pressing member 4 is in close contact with the side surface of the frame 2.

The bottom plate 1 and the frame 2 are attached by an appropriate method so that the bottom plate 1 and the frame 2 are in close contact with each other. For example, it can be performed by welding, an adhesive, or the like.
On the other hand, when the module pressing member 4 is attached to the frame 2, the solar cell module 3 is attached to the frame 2 via the rubber packing 5 so that the solar cell module 3 and the mounting portion 2a have a sufficient sealing property. It suffices to press it on the mounting portion 2a. However, since the sealing property between the solar cell module 3 and the frame 2 is maintained for a long period of time, the frame 2 and the module pressing member 4 can be joined by welding, an adhesive, or the like.

The box body thus constructed has a space inside. Here, the frame 2 is 2a shown in FIG.
The height H up to is formed as an appropriate value and the box having a space is used as a float. That is, sufficient buoyancy required to keep the solar cell module 3 exposed on the water surface is generated by the space inside the box. At this time, in the present invention, the solar cell module 3 is a box-shaped top plate having a space.

Here, it is preferable that the bottom plate 1, the frame 2, and the module pressing member 4 are made of a metal material having corrosion resistance, because the power generation device 11 can have a long life. As a metal material having corrosion resistance,
Stainless steel, titanium, titanium alloy, aluminum alloy, plated steel plate, etc. can be used. When these metal materials are formed of, for example, a plate material having a plate thickness of about 0.6 to 3.0 mm, the height H of the frame 2 is set such that the vertical space is about 40 to 100 mm. be able to.

In addition, when the sealing material such as the rubber packing 5 described above is arranged on the edge of the solar cell module 3, when the frame 2 or the like is bent, the sealing material such as the rubber packing 5 buffers. As a material, it is possible to suppress the bending of the solar cell module 3 and prevent the solar cell module 3 from being deformed or damaged, which is preferable. Of course,
It also serves to enhance the sealing property between the solar cell module 3 and the frame 2.

Further, as shown in FIG. 4, it is also preferable that a buoyancy material such as a foam material is housed in a box having a space. By doing so, when using, for example, when there is a gap between the solar cell module 3 and the frame 2 and the bottom plate 1 and the frame 2 which are joined by welding or an adhesive agent, etc. However, even if water tries to enter the box, the amount of water that can enter the box is limited because the box contains buoyancy materials such as foam that have many holes that do not communicate with the surface. To be

For this reason, even if there is a gap between the bottom plate 1 and the frame 2 which are sealed by the solar cell module 3 and the frame 2 or are joined by welding or an adhesive,
It is possible to reduce the decrease in buoyancy, and it is possible to cause the box body to generate the buoyancy required to hold the solar cell module 3 on the water surface. The buoyancy material is shown in Figure 5.
As shown in, it is possible to use a foam material cut to an optimum size, and as the material of the foam material, urethane foam,
It can be foamed polyethylene or the like. As the foam material, those having an apparent specific gravity of less than 1 can be preferably used.

The buoyant material such as foam material is composed of the bottom plate 1,
Since it is housed in a float body having a space formed by the frame 2 attached to the bottom plate 1 and the solar cell module 3 placed on the upper part of the frame 2 and pressed by the module pressing member 4, No deterioration due to ultraviolet rays contained in light occurs. As described above, in the power generator of the present invention, the solar battery module is used as a top plate to form a box, and the box is a float having a space inside. Therefore, the power generator 31 of FIG. As described above, the structure is simple, since the semi-cylindrical top plate 34 supporting the flexible solar cell module 32 is not required.

Further, in the power generator of the present invention, the solar cell module 3 can be used without using the float material made of foamed resin.
Since the float allows the buoyancy required to keep the water on the surface of the water to be generated by the box body, it is possible to achieve a long life and a low cost. Further, in the power generator of the present invention, the solar cell module 3 can be kept on the surface of the water without using the float material made of the foamed resin, and thus the waterproof property may include “environmental hormone”. It is eco-friendly because it is not necessary to protect the foamed resin with a coating.

[0024]

[Example] In order to obtain a solar battery power generator for water installation using a solar cell module in which solar cells are integrated in a flat plate having a vertical dimension of 120 cm and a horizontal dimension of 90 cm, a bottom plate has a thickness of 0.6 mm. Of stainless steel (SUS) was used, and for the frame and the module pressing member, stainless steel (SUS) having a thickness of 1.5 mm was formed into the shape shown in FIGS.

The height H of the frame is such that the space between the boxes in the vertical direction is 4.5 cm, and the buoyancy required to hold the solar cell module 3 on the water surface is maintained. It was a float to be generated. Solar cell module 3
Is pressed against the upper part of the frame 2 by the module pressing member 4 via the rubber packing 5, the frame 2 and the module pressing member 4 are welded together, and the bottom plate 1 is attached by the It was joined by welding so as to be in close contact.

In this case, in this example, two polyethylene foam buoyancy members 6 having a longitudinal dimension of 112 cm, a lateral dimension of 36 cm and a thickness of 40 cm were accommodated in the box body. The two buoyancy members 6 are arranged laterally at a distance from each other so as to open the central portion of the box body, and a cable for transmitting the electric power generated in the solar cell module 3 is passed through the central portion of the box body. Power can be transmitted to the outside from the cable outlet 1a provided on the.

In this solar cell power generator for installation on water, since the box body having the space inside which is composed of the bottom plate, the frame and the solar cell module is a float, it is possible to keep the sun floating for a long period of time while floating above the water surface. Power can be generated by light.

[0028]

According to the present invention, since the box having the space inside which is composed of the bottom plate, the frame and the solar cell module is a float, it is environmentally friendly, has a simple structure, has a long life and is low in cost. The above-mentioned solar cell power generator for installation on water can be used.

[Brief description of drawings]

FIG. 1 is a perspective view of a solar cell power generator for installation on water according to an embodiment of the present invention.

FIG. 2 is an exploded view of the solar cell power generator for installation on water shown in FIG.

FIG. 3 is a longitudinal sectional view of a main part of the solar cell power generator for installation on water shown in FIG.

FIG. 4 is a preferred example of the solar cell power generator for installation on water shown in FIG.

5 is an exploded view of the solar cell power generator for installation on water shown in FIG. 4. FIG.

FIG. 6 is a perspective view showing an example of a conventional solar cell power generator for installation on water.

7 (a) is a perspective view and FIG. 7 (b) is a cross-sectional view showing another example of a conventional solar cell power generator for installation on water.

[Explanation of symbols]

11, 21, 31 Solar cell power generator for water installation (simply referred to as a power generator) 11a Connection mooring member 1 Bottom plate 1a Cable outlet 2 Frame 2a Top plate mounting part 3 Solar cell module 4 Module pressing member 5 Rubber packing (Seal material) 6 Buoyant material 22, 32 Solar cell module 22a Solar cell group 25 Mooring member (hook) 26 Mooring cord 23, 33 Buoyancy material (float material) 34 Top plate 35 Fixing hook 36 Module fixing plate 37 Frame 38 Terminal box

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiromi Obayashi             1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama             Shi) Kawasaki Steel Co., Ltd. Mizushima Steel Works (72) Inventor Yuji Komami             2-17-4 Kuramae, Taito-ku, Tokyo Kawatetsu La             IF Co., Ltd. F-term (reference) 5F051 BA05 BA11 BA18 JA04 JA08                       JA09 JA20

Claims (4)

[Claims] 1. A solar cell power generator for installation on water, which is laid on the surface of water and generates electric power by sunlight, wherein the solar cell power generator is a bottom plate and a top plate attachable to the bottom plate. A frame capable of being attached, a solar cell module in which solar cells are integrated in a flat plate shape, and a module pressing member for pressing the solar cell module,
And a box body having a space composed of the bottom plate, the frame attached to the bottom plate, and the solar cell module held by the module holding member on the upper portion of the frame is the sun. A solar cell power generator for installation on water, characterized in that a float for floating the battery module on the water surface is formed. 2. The bottom plate, the frame, and the module pressing member other than the solar cell module forming the box are made of a metal material having corrosion resistance. The solar cell power generator for installation on the water described above. 3. The solar cell module is held by the upper portion of the frame via a sealing material arranged at an edge of the solar cell module.
Alternatively, the above-mentioned solar cell power generator for installation on water. 4. The solar cell power generator for installation on water according to claim 1, wherein a buoyant material is housed in the box body.